Question

the reaction system quick check a cold pack is snapped, and the chemical reaction causes the pack to feel cold. which kind of reaction is this? (1 point) this is an exothermic reaction because the surroundings took energy from the system. this is an exothermic reaction because the system took energy from the surroundings. this is an endothermic reaction because the system took energy from the surroundings. this is an endothermic reaction because the surroundings took energy from the system.

Explanation:

To determine the reaction type, recall: Endothermic reactions absorb energy (system takes from surroundings, causing surroundings to feel cold), exothermic release energy (system gives to surroundings, causing warmth). A cold pack feels cold, so the system (cold pack reaction) absorbs energy from surroundings. So it's endothermic, and the system (reaction) takes energy from surroundings. The option "This is an endothermic reaction because the system took energy from the surroundings" matches.

Answer:

This is an endothermic reaction because the system took energy from the surroundings (the third option from the top, or the option with this description).